Fatty acids acetylenic, biosynthesis

A large series of compounds are derived by modification of crepenynic acid and related Cig acetylenic fatty acids. Whereas these acids may be accumulated in seed oils as components of triacylglycerols, modified derivatives usually are found in vegetative portions of plants. The biosynthesis of matricaria ester (4) and dehydromatricaria ester (5) (both with 10 carbon atoms in the acid portion of the molecule) (Fig. 3.1) is typical for this series of compounds. In this instance, fatty acids with chain lengths of less than 18 carbon atoms do not serve as precursors. 

BIOSYNTHESIS OF AN ACETYLENIC FATTY ACID IN MICROSOMAL PREPARATIONS FROM DEVELOPING SEEDS OF CREPISALPINA... 

Kohn, G., Hartmann, E., Stymne, S. and Beutelmann, P. (1994) Biosynthesis of acetylenic fatty acids in the moss Ceratodon purpureus (Hedw.) Brid., J. Plant Physiol. 144, 265-271. 

Biosynthesis of an Acetylenic Fatty Acid in Microsomal Preparations from Developing Seeds of Crepis alpina. 

AN UNCOMMON PATHWAY IN THE BIOSYNTHESIS OF ACETYLENIC FATTY ACIDS IN MOSSES... 

In addition to the normal ethylenic double bonds, some fatty acids possess acetylenic bonds. These occur in a number of rare seed oils and a few mosses. Little is known about their biosynthesis. 

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